Machine for pulverizing soil



(No Model) I P. P, KREWSON.

I MAGHINE FOR PULVERIZING SOIL.

'No] 593,848; Patented Nov. 16, 1.897.

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UNITED STATES PATENT *UFFICE.

MACHINE FOR PULVERIZING SOIL.

SPECIFICATION forming part of Letters Patent No. 593,848, dated November 16, 1897.

Application filed April 25, 1896.

To all whom it may concern:

Be it known that I, FRANKLIN PIERCE KREWSON, a citizen of the United States, and

a resident of Philadelphia, (Frankford,) in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Machines for Pulverizing Soil, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof, in which similar letters of reference indicate corresponding parts.

This invention relates to machines for pul verizing soil and to that class thereof known as barrows, and the object of the inventionis to provide an improved device of this class whereby the soil or the clods may be thoroughly pulverized and crushed andthe ground leveled without going over the same more than once; and with these and other ob jects in view the invention consists in the construction, combination, and arrangement of parts hereinafter described and claimed.

My improved pulverizing-machine involves a frame in which are mounted two rollers, said rollers being arranged diagonally in or below said frame or at an angle to a longitudinal line passing therethrough, and said rollers are provided with teeth in the usual manner, which are designed to break up and thoroughly pulverize the soil.

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which-- Figure 1 is a side view of myimproved pulverizer; Fig. 2, a plan view thereof; Fig. 3,"

a plan View of an attachment by which the inner ends of the rollers are supported; Fig. 4, a side and an edge View thereof, part of the construction in the edge view being shown in section; Fig. 6, asectional detail of the construction, and Fig. 7 a side view of a part of the frame.

In the practice of my invention 1 provide use, to the sides of the frame across the hinged connections thereof, so as to stifien and support said frame, and these strips or Serial No. 588,999. (No model.)

, plates maybe secured in position by bolts E or in any desired manner, and the frame may be provided with corresponding slots or gooves, in which the strips or plates are placed. At the opposite sides of the separate sections of the frame are secured hangers D, and suspended centrally of-the frame or from the side of one of the sections thereof is another hanger G, a plan view of which is shown in Fig. 3 and a side and edge View in Fig. 4.

The hanger G is provided at its lower end with a head g, in the opposite sides of which are formed cavities or recesses 9 said cavities or recesses being yoke-shaped in form at their'lower sides and being provided with cross bars or bolts 9 and the lower inner portions of said cavities or recesses are spherical in form, and the hanger H is suspended from the frame by means of bolts or other devices which pass through a longitudinal slot H, formed in one side of one of the sections of the frame, and the position thereof may be adjusted forwardly or backwardly by a bolt h, which passes into the upper end thereof, and a head, h of which projects at the rear side of the frame, said hanger being provided with a cross-head-h into which passes a setscrew h.

Mounted in the hangers D and G are shafts K, the inner ends of which are secured in sockets 7a, which are provided with circular heads and adapted to enter the circular cavities or recesses g in the lower end of thehanger G, and the outer ends of these shafts are also pivotally connected with the lower ends of the hangers D in any desired manner,this connection being preferably the same as that between the shafts and the central hanger G, and the object of this construction being to provide means whereby the angle of such shafts may be changed within certain limits when desired.

Mounted on each of the shafts K is a roller M, the body portion of which may be of any desired construction, and said roller preferably consists of a plurality of staves m, which are secured to a suitable framework, consisting of annular bands 191?, which are connected with the shafts by spokes m and each of the staves m is provided with a row'of teeth m, which are secured therein, as shown in Fig. 6, but which may beconnected therewith in any desired manner. These teeth are similar to the usual harrow-teeth, and any desired number thereof may be employed. I also provide a detachable tongue or pole O, which may be connected with the frame in any desired manner and which is provided with a seat 0 and pivotally connected with the forward part of the frame at O are rods or bracesO which are connected with a tongue or pole at O and the usual doubletree O and singletrees O are also provided, and the doubletree 0 is connected with the pivotal support of the rods or braces O at O by means of chains 0 The operation will be readily understood from the foregoing description when taken in connection with the accompanying drawings and the following statement thereof. The position of the rollers M is such that while they revolve in the usual manner there is also a dragging or sliding motion thereof, and the arrangement of the teeth m is such (said teeth being arranged in longitudinal and transverse and circular rows) that every particle of the soil over which they pass is brought in contact therewith, and because of this motion of the rollers the soil is finely divided and the ground leveled off at the same time, and it will also be observed that because of the inclination or angular position of the rollers a greater width of ground is covered thereby than would be possible if said rollers were arranged in direct line, as usual in this class of devices.

This machine or pulverizer may be drawn by a single pair of horses in the usual manner, and it is evident that changes in and modifications of the construction herein described maybe made without departing from the spirit of my invention or sacrificing its advantages, and I reserve the right to make all such alterations therein and modifications thereof as fairly come within the scope of the invention.

Having fully described my invention, I claim as new and desire to secure by Letters Patent The herein-described harrow comprising a f raifie in which are mounted two rollers which are provided on their outer surfaces with spikes or teeth, said rollers being suspended by hangers which are connected with said frame, two of which are arranged at the 0pposite side thereof, and one at the center and a little to the rear of the other two, and said rollers being each mounted on separate shafts, the inner ends of which are connected with the central hanger by a ball-and-socket or pivotal joint and the outer ends of said shafts being pivotally connected to their respective hangers by means of an opening in said hangers, through which the ends of the said shafts project, and in which they have a sliding play, whereby the said rollers are held at an angle to the longitudinal line of said frame, and the position of the central hanger being transversely adjustable, and said frame being composed of two separate sections which are hinged together, and being also provided with means whereby when in use, the separate frames may be rigidly connected, and said frame being also provided with a tongue or pole which is connected with the frame transversely thereof, all substantially as shown and described, and for the purpose set forth.

In testimony that I claim the foregoing as myinvention I have signed my name, in presence of the subscribing witnesses, this 21st day of April, 1896.

' FRANKLIN PIERCE KIIEWSON.

\Vitnesses:

HARVEY Q. QUIoKsALL, L. T. JUSTICE. 

